Full mat for stair step



FIG. 1 is a top front perspective view of a full mat for stair step showing my new design;

FIG. 2 is a left side elevational view of the stair step mat, the left side being identical thereto;

FIG. 3 is a front elevational view of the front side of the stair step mat, the backside being identical thereto;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines in the drawing depict environmental subject matter showing the design in a position of use and form no part of the claimed design. 

CLAIM The ornamental design for a full mat for stair step, as shown and described. 